I really enjoyed this talk and thought it was a great introduction into xhprof with convincing explanations as to why you should use profiling talks instead of naive profiling.
I'd note that the slides were a bit hard to read at times due to the colour scheme of the screenshots taken from XHProf, but this was exaggerated by the use of an LCD screen instead of a larger projector due to the venue. I also think a really nice thing that could be covered is when you should be profiling your applications (in production, whilst you are developing [continuous profiling] or at some point in the future after you've deployed a new feature).
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I really enjoyed this talk and thought it was a great introduction into xhprof with convincing explanations as to why you should use profiling talks instead of naive profiling.
I'd note that the slides were a bit hard to read at times due to the colour scheme of the screenshots taken from XHProf, but this was exaggerated by the use of an LCD screen instead of a larger projector due to the venue. I also think a really nice thing that could be covered is when you should be profiling your applications (in production, whilst you are developing [continuous profiling] or at some point in the future after you've deployed a new feature).